Timer for washing-machines



J. A- BRENNER. TIMER FOR WASHING MACHINES.

APPLICATION FILED JUNE 21,1920. 1,395,034. Patented Oct. 25, 1921 2 SHEETS-SHEET i.

J. A- BRENNER. TIMER FOR WASHING MACHINES.

APPLICATION FILED JUNE 21, 1920. 1,395,034, Patented Oct. 25, 1921.

2 SHEET$SHEEY 2.

57 g i 11"" 4 an 5/ 30 25 26 :2 ff '53 5% 46 42 I k I i 46 I PATENT OFFEQE.

JOSEPH A. BRENNER, OF HANOVER, PENNSYLVANIA.

TIMER FOR WASHING-MIACHINES.

Application filed June 21,

T 0 all whom it may concern Be it known that I, JOSEPH A. BRENNER, a citizen of the United States, residing at Hanover, in the county of York and State of Pennsylvania, have invented certain new and useful Improvements in Timers for lashing-Machines, of which the following is a specification.

This invention relates to washing machines, and more particularly to a time operated switch for use in connection with the motor of the washing machine to stop the operation of the machine after any desired period of operation.

In the operation of washing machines, the washing operation generally takes place for a given length of time and. in some cases, the washing is carried out in two separate steps, asfor example, a first step of twenty minutes and a second step of ten minutes. After starting the operation of the washing machine, it is sometimes inconvenient for the operator to return to the machine to stop the motor at the end of the given periods.

An important object of the invention is to provide a time operated switch which may be readily attached to the standard makes of washing machines.

A further object of the invention is to provide a time operated switch, the rotating parts of which are driven by the motor which operates the washing apparatus.

A further object of the invention is to provide a device of the above mentioned character having a dial provided with graduations and means adapted to be set according to the graduations on the dial, whereby the operation of the washing machine may be stopped after any desired period of operation.

Other objects and advantages will be apparent throughout the course of the following description.

In the drawings, wherein like numerals are employed to designate like parts throughout the same, a

Figure 1 is a side elevation of a washing machine showing the attachment of my device thereto. V

Fig. 2 is a side elevation of my device, the door of the casing being opened.

.Fig. 3. is a section taken on the line 3-3 of Fig. 2. y

.Fig. 4 is a section takenon the line 4-4 of Fig. 2.

Specification of Letters l-atent.

Patented Oct. 25, 1921.

1920. Serial No. 390,522.

Fig. 5 is a fragmentary elevation of a portion of the rear face of the dial wheel.

Fig. 6 is a section taken on the line 6-6 of Fig. 5.

Fig. 7 is a perspective view of the time setting knob and associated elements, and

Fig. 8 is a diagrammatic showing of the electrical circuit of the device.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 10' designates the stand of any standard type of washing machine having the usual tub 11 mounted thereon. The usual motor 12 is provided mounted within the stand 10 for driving the washing apparatus within the tub 11. The shaft of the motor 12 is provided with an outward extension 13 having a pulley 14 secured thereto. Mounted upon one side of the stand 10 is a bearing plate 15 having mounted thereon a bearing 16, in which is journaled a time switch drive shaft 17. The outer end of the shaft 17 is provided with a pulley 18 and a belt 19 passes about the pulleys 14- and 18, whereby the shaft 17 is driven from the motor 12.

A casing 20 is secured to the side of the stand 10 by any suitable means such as brackets 21.- A. door 22 is provided for normally closing the casing 20 to protect the working parts of my device.

The shaft 17 extends within the casing 20, as shown in Fig. 2, and is journaled in bearings 23 and 23, secured to the rear wall 24. of the casing 20. A portion of the shaft substantially centrally of the casing 20 is provided with a wormgear 25 for a purpose to be described. The bearing 23' is provided with a depending portion.26 to which is secured a plate 27. A bracket 28 is carried by the plate 27 and includes a horizontal portion 29 provided with an insulating bushing 30. A contact 31 is mountedin the bushing 30 and is provided at its lower end with a binding post 32. A pivoted arm 33 is provided, pivoted to the plate 27 as at 34. The arm 83is provided with an inner'portion 35 extendinga substantial distance inwardly of the plate 27. The arm 33'is also provided with an outwardly extendingportion 36 terminating in a preferably vertical head 37 provided with an insulating bushing 38. A contact 39 is mounted'in the head 37 and carries at its upper end 1 a binding post 10. A spring 40 connected one-half hour.

between the arm 33 and bracket 28 serves to normally maintain contact between the contacts 31 and 39.

As shown in Figs. 2, 3, and 4, a pair of reinforcing rods 41 is mounted vertically within the casing 20 and secured to the rear wall 24. The rods 41 carry a pair of horizontal rods 42. Secured to the horizontal rods 42, substantially centrally thereof, is a bearing plate 43 in which is mounted a stub shaft 44 extending a substantial distance outwardly of the plate 43. Secured to the shaft 44 by means of a set screw 45 or the like is a dial wheel 46, the periphery of which is provided with a gear 47 meshing with the worm gear 25 on the shaft 17 by means of which the wheel 46 is rotated. The wheel 46 is provided with a substantially T- shaped circumferential slot 48 opening outwardly of the wheel. An adjusting bolt 49 is provided having a square head 50 adapted to be slidably mounted within the inner portion of the slot 48. The bolt 49 extends outwardly of the wheel 46 and receives an internally threaded clamping head 51 provided with an enlarged head 52, whereby it maybe conveniently adjusted. As clearly shown in Fig. 3, when the clamping head 51 is revolved upon the bolt 49, the inner face of the clamping head is adapted to clamp against the outer face of the wheel 46 to secure the bolt 49 and clamping head 51 against movement. By revolving the knob 52 in the opposite direction, the bolt 49 and head 51' are released, whereby they may be turned to any part of the slot 48. As shown in Fig. 5, the rear face of the wheel 46, adjacent the slot 48, is provided with a substantially square cut-out portion 53 communicating with the slot 48 whereby the bolt 49 may be inserted within the slotr48.

In the present showing of my invention, the wheel 46, driven by the shaft 17, is adapted to make one complete revolution in The outer face of the dial -may be provided with graduations 54,

whereby the knob 52 may be set for any desired time of operation. 7 V a 7 As shown in Figs. 2 and 3, the conductor 55 carrying the lead wires to the motor, enters the casing 2Q-through an insulating" bushing 56 and passes out through an insu lating bushing 57. As shown at58, the conductor 55 may be tapped and one of the lead wires connected'witha branch 59 connected with the binding post 32. A second branch wire 60 isalso provided'and connects with the binding post 40. The electrical connections tween the other terminal of the source of current 61 and a motor 62; A manually operated switch 64 is provided, located at any convenient point in the circuit.

The operation of my device is as follows: IVhen itis desired to operate the washing apparatus, the knob 52 is turned to loosen the head 51 and moved to any desired part of the slot 48, according to the length of time it is desired. to operate the machine. The switch 64 is then closed, starting the motor 12 which operates the washing'apparatus and also revolves the shaft 17 which in turn slowly rotates the wheel 46 in the direction of the arrow shown in Fig. 2. WVhen the knob 52 reaches the position indi cated by the dotted lines in. Fig. 2, the head 51 contacts the inner end of the pivoted arm 33, lowering the inner end and raising the outer end thereof, whereby the contact between the contacts 31 and 39 isbroken, stopping the operation of the motor 12.

It is to be understood that while I have described the preferred embodiment of my invention, various changes in the shape, size, and arrangement-of parts maybe resorted to withoutdeparting' from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In a device ofthe characterdescribed, a wheel, provided with a substantially T- Shaped circumferential slot, means for rotating said wheel, a bolt having an enlarged head slidably mounted in said slot, a stationary contact, apivoted arm, a contact carried by said arm and adapted to contact saidstationary contact, and identical means for clamping said bolt and engagingsaid arm to disengage saidcontact's, 2. In a device of the character described, a shaft provided with a worm gear, means for rotating said shaft, a wheel, a gear carried by said wheel and adapted to mesh with said worm gear, said gear being provided with asubstantially T sha'ped circumferential slot, a bolt having an enlarged head slidably mounted in said slot, a stationary contact, a pivoted arm including innerand outer ends, a contact'carried by theouterend of said arm and adapted to contact said stationarycontact," and identical means for clamping said bolt and mov ing the inner end of said arm to disengage said contacts.

3. In a deviceof the character described, 7

nicating between said slot and the inner face of said wheel, a bolt having an enlarged rectangular head adapted to be inserted through said rectangular opening and slidably mounted in said slot, a stationary contact, a pivoted arm including inner and outer ends, a contact carried by the outer end of said arm and adapted to contact said stationary contact, and a clamping head adapted to clamp said bolt against movement and to engage the inner end of said arm to disengage said contacts.

In a device of the character described, a shaft provided with a worm gear, means for rotating said shaft, a wheel, a gear carried by said wheel and adapted to mesh with said worm gear, said gear being provided with a substantially T-shaped circumferential slot communicating with the outer face of said wheel, said wheel being further provided with a rectangular opening communieating between said slot and the inner face of said wheel, a bolt having an enlarged rectangular head adapted to be inserted through said rectangular opening and slidably mounted in said slot, a stationary contact, a pivoted arm including inner and outer ends, a contact carried by the outer end of said arm and adapted to engage said stationary contact, means for normally maintaining engagement between said contacts, and a clamping head adapted to secure said bolt against movement and to engage the inner end of said arm to disengage said contacts.

5. In a device of the character described, a wheel provided with a circumferential slot, means for rotating said wheel, a stationary contact, a movable contact, a bolt slidably mounted in said slot, and identical means for clamping said bolt and engaging said movable contact to disengage said contacts.

6. In a device of the character described, a Wheel provided with a circumferential slot, a bolt slidably mounted in said slot, means for rotating said wheel, a stationary contact, a pivoted arm, a contact carried by said arm and adapted to contact said stationary contact, and identical means for clamping said bolt and engaging said arm to disengage said contacts.

In testimony whereof I afiiX my signature in presence of two witnesses.

JOSEPH A. BRENNER. Vitnesses:

OSCAR R. BOWMAN, DALE M. STEGNER. 

